Properties of the Number 1276

One Thousand Two Hundred Seventy-Six

Basics

Value: 1275 → 1276 → 1277

Parity: even

Prime: No

Previous Prime: 1259

Next Prime: 1277

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 11 × 29

Divisors: 1, 2, 4, 11, 22, 29, 44, 58, 116, 319

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111100

Octal: 2374

Duodecimal: 8A4

Hexadecimal: 4fc

Square: 1628176

Square Root: 35.7211421989835

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Central polygonal numbers (the Lazy Caterer's sequence): n(n+1)/2 + 1; or, maximal number of pieces formed when slicing a pancake with n cuts. A124

Generalized pentagonal numbers: m*(3·m - 1)/2, m = 0, +-1, +-2, +-3, .... A1318

Second pentagonal numbers: a(n) = n*(3·n + 1)/2. A5449

Number of compositions (ordered partitions) of n that are concave-down sequences. A70211

Coordination sequence for "tsi" 3D uniform tiling. A299289

a(n) = 1 + n + 2·n². A84849

a(n) = ∑_k<=n A000203(k)*(n-k+1), where A000203(m) is the sum of divisors of m. A175254

Numbers whose sum of even digits and sum of odd digits are equal. A36301

Number of integer partitions of n into relatively prime parts that are all greater than 1. A302698

a(n) = 1 + (n-2)*(n-1)/2. A152947